ci: don't pin official GH actions via commit, just tag

There's no real value in doing it via commit for official GH actions. We
can keep using pinned commits for unofficial actions. It's hassle for no
gain.

Maybe going forward we can limit this further by only being paranoid
for the jobs with any access to tokens.

.github/workflows/ci.yml

@@ -26,7 +26,7 @@ jobs:
         build_system: [autotools, cmake]
     runs-on: ${{ matrix.os }}
     steps:
-      - uses: actions/checkout@1d96c772d19495a3b5c517cd2bc0cb401ea0529f #v4.1.3
+      - uses: actions/checkout@v4.1.6
 
       ########################
       # Install Dependencies #
@@ -156,7 +156,7 @@ jobs:
         run: ./build-aux/ci_build.bash -b ${{ matrix.build_system }} -d small -p test -n small
 
       # Attempt to upload the test logs as artifacts if any step has failed
-      - uses: actions/upload-artifact@65462800fd760344b1a7b4382951275a0abb4808 #v4.3.3
+      - uses: actions/upload-artifact@v4.3.3
         if: ${{ failure() }}
         with:
           name: ${{ matrix.os }} ${{ matrix.build_system }} Test Logs

.github/workflows/freebsd.yml

@@ -14,7 +14,7 @@ jobs:
     runs-on: ubuntu-latest
     name: Test xz on FreeBSD
     steps:
-    - uses: actions/checkout@8ade135a41bc03ea155e62e844d188df1ea18608 #v4
+    - uses: actions/checkout@v4.1.6
     - name: Test in FreeBSD
       id: test
       uses: vmactions/FreeBSD-vm@f8be330398166d1eb0601f01353839d4052367b2 #v1.0.7

.github/workflows/netbsd.yml

@@ -14,7 +14,7 @@ jobs:
     runs-on: ubuntu-latest
     name: Test xz on NetBSD
     steps:
-    - uses: actions/checkout@8ade135a41bc03ea155e62e844d188df1ea18608 #v4
+    - uses: actions/checkout@v4.1.6
     - name: Test in NetBSD
       id: test
       uses: vmactions/NetBSD-vm@da9ed4d7cd0fb64f330e2342ac5c77ba529b6a11 #v1.0.7

.github/workflows/openbsd.yml

@@ -14,7 +14,7 @@ jobs:
     runs-on: ubuntu-latest
     name: Test xz on OpenBSD
     steps:
-    - uses: actions/checkout@8ade135a41bc03ea155e62e844d188df1ea18608 #v4
+    - uses: actions/checkout@v4.1.6
     - name: Test in OpenBSD
       id: test
       uses: vmactions/OpenBSD-vm@eaa3d3f695a5a52971c23958f6dd4cd3397f959d #v1.0.8

.github/workflows/solaris.yml

@@ -14,7 +14,7 @@ jobs:
     runs-on: ubuntu-latest
     name: Test xz on Solaris
     steps:
-    - uses: actions/checkout@8ade135a41bc03ea155e62e844d188df1ea18608 #v4
+    - uses: actions/checkout@v4.1.6
     - name: Test in Solaris
       id: test
       uses: vmactions/solaris-vm@548f790d1bc2b9342a76cbb47ddbb85875605559 #v1.0.2

.github/workflows/windows-ci.yml

@@ -55,7 +55,7 @@ jobs:
         # text file and will not match the output from xzgrep.
         run: git config --global core.autocrlf false
 
-      - uses: actions/checkout@1d96c772d19495a3b5c517cd2bc0cb401ea0529f #v4.1.3
+      - uses: actions/checkout@v4.1.6
 
 
       ########################
@@ -117,7 +117,7 @@ jobs:
       ###############
 
       # Upload the test logs as artifacts if any step has failed.
-      - uses: actions/upload-artifact@65462800fd760344b1a7b4382951275a0abb4808 #v4.3.3
+      - uses: actions/upload-artifact@v4.3.3
         if: ${{ failure() }}
         with:
           name: ${{ matrix.msys2_env }} ${{ matrix.build_system }} Test Logs