Update Yara/Go/Action versions; pin Actions to digests

Signed-off-by: egibs <[email protected]>

.github/workflows/buildtest.yml

@@ -6,17 +6,17 @@ jobs:
   buildtest:
     runs-on: ubuntu-latest
     steps:
-    - uses: actions/checkout@v2
+    - uses: actions/checkout@692973e3d937129bcbf40652eb9f2f61becf3332 # v4.1.7
 
     - name: Install stuff
       run: |
         sudo apt-get -qqy update
         sudo apt-get -qqy install wget ca-certificates build-essential bison flex automake autoconf libtool pkg-config
 
     - name: Set up Go
-      uses: actions/setup-go@v2
+      uses: actions/setup-go@cdcb36043654635271a94b9a6d1392de5bb323a7 # v5.0.1
       with:
-        go-version: 1.16
+        go-version: 1.22
 
     - name: Show info about build environment
       run: |
@@ -28,7 +28,7 @@ jobs:
 
     - name: Build YARA from source
       run: |
-        YARA_VERSION=4.3.0
+        YARA_VERSION=4.5.1
         wget --no-verbose -O- https://github.com/VirusTotal/yara/archive/v${YARA_VERSION}.tar.gz | tar -C .. -xzf -
         ( cd ../yara-${YARA_VERSION} && ./bootstrap.sh )
         mkdir -p ../yara-build

go.mod

@@ -1,3 +1,3 @@
 module github.com/hillu/go-yara/v4
 
-go 1.15
+go 1.22